Surname Ruengkitditsaya (Ruengkitditsaya 
) , in the entire world, is an extremely rare cognomen. The surname Ruengkitditsaya is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruengkitditsaya | Thailand |
Manatsanan, and Aitthiphat